fleet: CLI surface 16 → 0 — 'active=0' on a busy board, and a retry gate that disagreed with the dashboard (#2728)

**Claimed on #2714 before starting.**
`packages/cli/src/commands/task.ts` (8) + `dashboard.ts` (8) — **16 →
0**.

## The finding that matters: `active=0` on a busy board

The same four-line aggregation appears **four times** in `dashboard.ts`
— the TUI stats refresh, the serve summary, the status line, the
agent-stats pass. Each compared the default lineage's two ids, so on a
renamed board every one reported `active=0` while the board was plainly
busy.

**This is worse than an inert internal guard.** A recovery path that
silently stops firing is invisible until something breaks. A stats line
that says zero is **read, believed, and acted on** — *"nothing is
running, so I can restart the engine."*

The four copies are now one helper, and that is the other half of the
fix: four independent copies of a lifecycle decision is how they drift,
and these were identical **by accident, not by construction**. One IR
read per *workflow*, asserted by call count — because the returned
number is identical either way, so only counting the work can see it.

## The retry gate exists twice, and #2713 converted one of them

After #2713, `POST /tasks/:id/retry` accepted a renamed board's stalled
review card while `fn task retry` refused it with *"not in a retryable
state"* — **one operator action answering differently depending on the
surface**.

The rule, stated at the site: **converting one copy of a duplicated gate
creates a disagreement that is harder to diagnose than the original
inert guard.** Grep the classifier by name before calling a lane
converted.

## The rest

- **`fn task set-node` / `clear-node`** rewrote the node override of an
*actively executing* card, because the "is in progress" check never
matched. That guard exists because the rewrite races the run.
- **The duplicate-guard candidate filter** kept completed cards in the
comparison set on a renamed board, so a new task was reported as a
duplicate of work that had already landed — the opposite of useful.
- **The duplicate-lineage `(archived)` marker** never printed, so the
operator could not tell a live duplicate from a filed one.

## Two DELIBERATE-LITERALs, with reasons

The board-render glyph compares `col` taken from the legacy `COLUMNS`
enum **that loop iterates** — the literal matches its own receiver by
construction. The real defect is already named in the code above it: a
card in a renamed column **is not rendered at all**, which is the R8/U10
surface change, not this glyph. Converting it would hide that behind a
trait lookup while the loop still cannot see the card.

## Pre-existing, not mine

5 failures in `commands/__tests__/task.test.ts` (GitHub import) **fail
on `origin/main`** — verified by stashing this change and re-running.
Someone owns that; it should not ride in here.

## Verification

census **16 → 0** · `pnpm test:gate` **10 / 71** · `pnpm smoke:boot`
**PASS** · `tsc -p packages/cli` clean · `pnpm lint` clean ·
`task-retry` 3/3 · 4 new cases with **2 red on revert**.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

scripts/lib/lifecycle-column-census-baseline.json

@@ -10,8 +10,6 @@
     "packages/dashboard/src/github-tracking-comments.ts": 9,
     "packages/dashboard/src/github-tracking-reconciler.ts": 9,
     "packages/engine/src/notification/notification-service.ts": 9,
-    "packages/cli/src/commands/dashboard.ts": 8,
-    "packages/cli/src/commands/task.ts": 8,
     "packages/core/src/default-workflow-hooks.ts": 7,
     "packages/dashboard/app/components/Column.tsx": 7,
     "packages/core/src/live-agent-count.ts": 6,
@@ -21,7 +19,6 @@
     "packages/dashboard/app/components/ListView.tsx": 6,
     "packages/dashboard/src/reliability-metrics.ts": 6,
     "packages/engine/src/runtimes/in-process-runtime.ts": 6,
-    "packages/cli/src/extension.ts": 5,
     "packages/core/src/task-store/merge-queue-ops-2.ts": 5,
     "packages/dashboard/app/components/TaskDetailModal.tsx": 5,
     "packages/dashboard/app/hooks/useTaskDiffStats.ts": 5,
@@ -142,6 +139,10 @@
   "deliberateByFile": {
     "packages/dashboard/app/components/TaskCard.tsx\u0000triage": 2,
     "packages/dashboard/app/components/TaskDetailModal.tsx\u0000triage": 2,
+    "packages/cli/src/commands/task.ts\u0000archived": 1,
+    "packages/cli/src/commands/task.ts\u0000done": 1,
+    "packages/cli/src/extension.ts\u0000archived": 1,
+    "packages/cli/src/extension.ts\u0000done": 1,
     "packages/dashboard/app/components/command-center/MissionControlPanel.tsx\u0000done": 1,
     "packages/dashboard/app/components/command-center/MissionControlPanel.tsx\u0000in-review": 1,
     "packages/dashboard/app/components/command-center/MissionControlPanel.tsx\u0000todo": 1,